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1. 发明公开

EP1491011A1 PACKET SCHEDULING MECHANISM 有权
标题翻译： VORRICHTUNG ZUR PAKETABLAUFSTEUERUNG
公开(公告)号：EP1491011A1
公开(公告)日：2004-12-29
申请号：EP03714222.1
申请日：2003-03-15
申请人： Cisco Technology, Inc.,c/o Robert Barr
发明人： BONOMI, Flavio , COSTELLO, Patrick , BRANDT, Robert
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04Q3/66 , H04L47/15 , H04L47/2441 , H04L47/26 , H04L47/50 , H04L49/201 , H04L49/254 , H04L49/506 , H04L49/508 , H04Q2213/13003 , H04Q2213/1302 , H04Q2213/1304 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13109 , H04Q2213/13141 , H04Q2213/13166 , H04Q2213/13174 , H04Q2213/13204 , H04Q2213/13216 , H04Q2213/13242 , H04Q2213/13299 , H04Q2213/13389
摘要： Methods and apparatus are disclosed for scheduling packets, such as in systems having a non-blocking switching fabric and homogeneous or heterogeneous line card interfaces. In one implementation, multiple request generators, grant arbiters, and acceptance arbiters work in conjunction to determine this scheduling. A set of requests for sending packets from a particular input is generated. From a grant starting position, a first n requests in a predetermined sequence are identified, where n is less than or equal to the maximum number of connections that can be used in a single packet time to the particular output. The grant starting position is updated in response to the first n grants including a particular grant corresponding to a grant advancement position. In one embodiment, the set of grants generated based on the set of requests is similarly determined using an acceptance starting position and an acceptance advancement position.
摘要翻译：公开了用于调度分组的方法和装置，例如在具有非阻塞交换结构和均匀或异构线路卡接口的系统中。在一个实现中，多个请求生成器，授权仲裁器和接受仲裁器一起工作以确定该调度。生成一组从特定输入发送数据包的请求。从授权开始位置，以预定顺序的前n个请求被识别，其中n小于或等于在特定输出的单个分组时间中可以使用的最大连接数。响应于包括与授予提前位置相对应的特定许可的前n个许可来更新授权开始位置。在一个实施例中，使用接受起始位置和接受提前位置类似地确定基于该组请求而生成的一组授权。

2. 发明公开

EP1712041A2 APPARATUS AND METHOD FOR IMPROVED FIBRE CHANNEL OVERSUBSCRIPTION OVER TRANSPORT 有权
标题翻译：设备和方法改进的光纤通道认购交通
公开(公告)号：EP1712041A2
公开(公告)日：2006-10-18
申请号：EP04813973.7
申请日：2004-12-13
申请人： Cisco Technology, Inc., c/o Robert Barr
发明人： NATARAJAN, Sriram , SHARAT, Prasad
IPC分类号： H04L12/28
CPC分类号： H04L47/10 , H04L47/30 , H04L47/39 , H04L49/357
摘要： Oversubscription of Fibre Channel links over a transport network (110) is provided. A transport interface (112) according to the present invention may maintain a small ingress buffer (109) in addition to the normal egress buffer (116). The ingress buffer is primarily used for oversubscription and the egress buffer is primarily used for flow control. Ready indications to multiple local Fibre Channel ports (102) may be locally generated when flow control conditions permit and may be distributed among the local Fibre Channel ports in response to preconfigured bandwidth sharing weights. Transport network efficiency is achieved by statistical multiplexing without significant increase in buffer memory requirements or introduction of latency into the flow control mechanism.

3. 发明公开

EP1741229A1 WEIGHTED RANDOM SCHEDULING 有权
标题翻译： GEWICHTETE ZUFALLSEINTEILUNG
公开(公告)号：EP1741229A1
公开(公告)日：2007-01-10
申请号：EP05724365.1
申请日：2005-03-02
申请人： Cisco Technology, Inc., c/o Robert Barr
发明人： PANIGRAHY, Rina , NEMAT, Awais, Bin
IPC分类号： H04L12/26
CPC分类号： H04L49/253 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3045
摘要： Weighted random scheduling is preformed, which may be particularly applicable to packet switching systems. For each particular input of multiple switch inputs, a request to send a packet to one of the outputs of the switch is generated by weighted randomly selecting one of the outputs to which the particular input has one or more packets to send. One of the requests is granted for each different one of the outputs for which one or more requests were generated. Packets are sent between the inputs and the output corresponding to the granted requests. The weighted random selection is typically weighted based on the number of packets or bytes to send to each of the outputs by a corresponding input of the inputs, the last times packets were sent from a corresponding input of the inputs to each of the outputs, and/ classes of service associated with packets to send to each of the outputs by a corresponding input of the inputs.
摘要翻译：执行加权随机调度，这可能特别适用于分组交换系统。对于多个开关输入的每个特定输入，通过加权随机选择特定输入具有一个或多个分组要发送的输出之一来产生向交换机的输出之一发送分组的请求。其中一个请求被授予生成一个或多个请求的每个不同的输出。数据包在输入和对应于授权请求的输出之间发送。加权随机选择通常基于通过输入的相应输入发送到每个输出的分组或字节的数量进行加权，最后一次分组从输入的相应输入发送到每个输出，以及 /与通过输入的相应输入发送到每个输出的分组相关联的服务等级。

4. 发明公开

EP1723522A2 METHOD AND SYSTEM FOR EFFICIENT LINK RECOVERY FOR FIBRE CHANNEL OVER SONET/SDH TRANSPORT PATH 失效转让
标题翻译：方法和系统高效量程恢复的光纤通道到SONET / SDH IN TRANSIT
公开(公告)号：EP1723522A2
公开(公告)日：2006-11-22
申请号：EP05722433.9
申请日：2005-01-18
申请人： Cisco Technology, Inc., c/o Robert Barr
发明人： SUNDARAM, Ganesh , ERIC RYLE, Thomas , AMIN, Hitesh , DIAB, John , VIDAL, Yves, Charles
IPC分类号： G06F11/00 , G06F15/173
CPC分类号： H04J3/14 , H04J3/0608 , H04J2203/0082
摘要： A method and system for flow control of GFP-encapsulated Fibre Channel frames over SONET/SDH transport networks is described. Transport interfaces, in the form of port cards, monitor any switch-over or error in the SONET/SDH transport network responsive to GFP out of synchronization signals; and transmit Fibre Channel Ordered Sets indicative of non-operation to it associated Fibre Channel port so that the Fibre Channel port performs link initialization and buffer credit recovery procedures with its counterpart Fibre Channel port across the SONET/SDH transport network. This speeds the recovery of the link between the two Fibre Channel ports.

5. 发明公开

EP1530763A2 ASSOCIATIVE MEMORY WITH ENHANCED CAPABILITIES 失效转让
标题翻译： ASSOZIATIVER SPEICHER MIT ERWEITERTENMÖGLICHKEITEN
公开(公告)号：EP1530763A2
公开(公告)日：2005-05-18
申请号：EP03784783.7
申请日：2003-07-19
申请人： Cisco Technology, Inc.,c/o Robert Barr
发明人： EATHERTON, William, N. , LEE, Jaushin , PRIYADARSHAN, Bangalore, L. , WARKHEDE, Priyank, Ramesh , ERTEMALP, Fusun , HOLBROOK, Hugh, Weber , DEVIREDDY, Dileep, Kumar , KANEKAR, Bhushan, Mangesh , PULLELA, Venkateshwar, Rao
IPC分类号： G06F17/30
CPC分类号： G06F17/30982
摘要： Methods and apparatus are disclosed for performing lookup operations using associative memories, including, but not limited to modifying search keys within an associative memory based on modification mappings, forcing a no-hit condition in response to a highest-priority matching entry including a force no-hit indication, selecting among various sets or banks of associative memory entries in determining a lookup result, and detecting and propagating error conditions. In one implementation, each block retrieves a modification mapping from a local memory and modifies a received search key based on the mapping and received modification data. In one implementation, each of the associative memory entries includes a field for indicating that a successful match on the entry should or should not force a no-hit result. In one implementation, an indication of which associative memory blocks or sets of entries to use in a particular lookup operation is retrieved from a memory.
摘要翻译：公开了用于使用关联存储器执行查找操作的方法和装置，包括但不限于：基于修改映射修改关联存储器内的搜索关键字，响应于最高优先级的匹配条目来响应不受限制的条件，包括力 - 指示，在确定查找结果中选择各种组或组合的联想存储器条目，以及检测和传播错误条件。在一个实现中，每个块从本地存储器检索修改映射，并且基于映射和接收到的修改数据修改接收的搜索密钥。在一个实现中，每个关联存储器条目包括用于指示条目上的成功匹配应该或不应该强制无命中结果的字段。在一个实现中，从存储器检索在特定查找操作中使用的哪些关联存储器块或条目集合的指示。

6. 发明授权

EP1741229B1 WEIGHTED RANDOM SCHEDULING 有权
标题翻译：加权随机调度
公开(公告)号：EP1741229B1
公开(公告)日：2017-10-18
申请号：EP05724365.1
申请日：2005-03-02
申请人： Cisco Technology, Inc., c/o Robert Barr
发明人： PANIGRAHY, Rina , NEMAT, Awais, Bin
IPC分类号： H04L12/937 , H04L12/935 , H04L12/931
CPC分类号： H04L49/253 , H04L49/205 , H04L49/254 , H04L49/30 , H04L49/3045

7. 发明公开

EP1716488A2 PREVENTING NETWORK DATA INJECTION ATTACKS USING DUPLICATE-ACK AND REASSEMBLY GAP APPROACHES 有权转让
标题翻译：通过使用重复的ACK未Neuassemblier的办法的间隙Einspeiseattacken网络的预防数据
公开(公告)号：EP1716488A2
公开(公告)日：2006-11-02
申请号：EP05705601.2
申请日：2005-01-11
申请人： Cisco Technology, Inc., c/o Robert Barr
发明人： RAMAIAH, Anantha , STEWART, Randall , LEI, Peter , MAHAN, Patrick
IPC分类号： G06F11/00 , G06F11/30 , G06F11/22 , G06F11/32
CPC分类号： H04L63/1466 , G06F21/552 , H04L47/27 , H04L47/29 , H04L47/323 , H04L47/34 , H04L63/1416 , H04L63/1458 , H04L69/16 , H04L69/163
摘要： Approaches for preventing TCP data injection attacks in packet-switched networks are disclosed. An ACK message or dummy segment is sent to verify the authenticity of the data in the re-assembly buffer, and to help discard spurious data faster. These approaches involve the sender in detection of spurious data, and make improved use of mechanisms for processing ACK messages that are native to typical TCP implementations. The latter approach may be implemented without modification of the sender's TCP implementation. Further, the receiver's TCP implementation maintains compatibility with RFC 793.

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